Cut slightly smaller so a full size patch can be wrapped around the jag. Exposes more patch area to the bore to give quicker, more uniform cleaning. Serrated teeth are fully covered and grip the patch to hold it when scrubbing in both directions. SPECS: Machined brass. PH Style. Standard PH fit Dewey Stainless Steel Rods (and other makes) with 8-32 female threads; C-PH Style are female threaded, and fit Dewey Coated Rods ONLY. 27 C-PH and larger C-PH rods have 12-28 female threads.